RE: Oh deer, a ghost...

Too bad you couldn't get closer of scope in on the white deer.

Leucism is a genetic condition causing partial, rather than complete, loss of all pigmentation (melanin and others) in animals, resulting in white, pale, or patchy skin, hair, or feathers, typically with normally colored eyes. It differs from albinism, which involves a total lack of pigment, including in the eyes. While not a curable disease, it can make animals more visible to predators, reducing survival rates in the wild.
Symptoms and Appearance
Coloration: White or leucistic patches, spots, or splotches on skin, hair, scales, or feathers.
Eyes: Contrary to albinism, leucistic animals typically have normally colored (dark) eyes, though they can sometimes be blue.
Skin/Beak: The skin, legs, and beak often retain their normal color.
Severity: Varies from nearly all-white to subtle patches of white feathers or fur.

Albinos would have pink or red eyes, still these are exciting images, thank you for sharing